(UV Leds) for Treating Wastewater and Septic Tank Effluent
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Infiltration/Inflow Task Force Report
INFILTRATION/INFLOW TASK FORCE REPORT A GUIDANCE DOCUMENT FOR MWRA MEMBER SEWER COMMUNITIES AND REGIONAL STAKEHOLDERS MARCH 2001 INFILTRATION/INFLOW TASK FORCE REPORT A GUIDANCE DOCUMENT FOR MWRA MEMBER SEWER COMMUNITIES AND REGIONAL STAKEHOLDERS MARCH 2001 Executive Summary This report is the product of the Infiltration/Inflow (I/I) Task Force. It has been developed through the cooperative efforts of the 43 Massachusetts Water Resources Authority (MWRA) member sewer communities, MWRA Advisory Board, The Wastewater Advisory Committee (WAC) to the MWRA, Charles River Watershed Association (CRWA), Fore River Watershed Association (FRWA), Mystic River Watershed Association (MRWA), Neponset River Watershed Association (NRWA), South Shore Chamber of Commerce (SSCC), Massachusetts Department of Environmental Protection (DEP), United States Environmental Protection Agency (EPA), and MWRA. The I/I Task Force recommends implementation of the regional I/I reduction goals and implementation strategies detailed in this report. The report outlines a regional I/I reduction plan with appropriate burdens and benefits for stakeholders. The report is intended to be a guidance document for use by local sewer communities, as well as other regional stakeholders, who may tailor appropriate aspects of the report recommendations to their unique situations. Severe storms in October 1996 and June 1998 led to the unusual circumstance of numerous sanitary sewer overflows (SSOs) from local and MWRA collection systems. In the aftermath of these events, EPA and DEP began an aggressive effort to make MWRA regulate flows from community sewer systems. MWRA recommended cooperative efforts by local collection system operators, as well as regulators and environmental advocates, would be more effective than a prescriptive, enforcement based approach. -
Septic Tanks, Are a Contributing Factor to Phosphorus As Well As Site Specific Conditions
Scotland’s centre of expertise for waters Practical measures for reducing phosphorus and faecal microbial loads from onsite wastewater treatment system discharges to the environment A review i Scotland’s centre of expertise for waters This document was produced by: Juliette O’Keeffe and Joseph Akunna Abertay University Bell Street, Dundee DD1 1HG and Justyna Olszewska, Alannah Bruce and Linda May Centre for Ecology & Hydrology Bush Estate Penicuik Midlothian EH26 0QB and Richard Allan Centre of Expertise for Waters (CREW) The James Hutton Institute Invergowrie Dundee DD2 5DA Research Summary Key Findings Onsite wastewater treatment systems (OWTS), the majority of local flow and load characteristics of the effluents streams, which are septic tanks, are a contributing factor to phosphorus as well as site specific conditions. With that in mind, measures and faecal microbial loads. OWTS contribute to waterbodies such as awareness raising, site planning, and maintenance failing to meet Water Framework Directive (WFD) objectives are likely to contribute to reduction of impact of OWTS on and as such, measures to improve the quality of OWTS the environment. The level of load reduction possible from discharges are required. Literature has been reviewed for measures such as awareness raising is difficult to quantify, a range of measures designed to reduce phosphorus and but it is low-cost and relatively easy to implement. Those most pathogen concentrations in effluent from OWTS. A feasibility effective for phosphorus and pathogen removal are post-tank assessment focussed on their application, effectiveness, measures that maximise physical removal, through adsorption efficiency, cost and ease of adaptation. A wide range of and filtering, and maintain good conditions for biological measures have been identified that could potentially improve breakdown of solids and predation of pathogens. -
INVESTIGATION of ANAEROBIC PROCESSES in SEPTIC TANK AS a WASTEWATER TREATMENT OPTION Odenigbo C
International Journal of Civil Engineering, Construction and Estate Management Vol.6, No.1, pp.22-25, May 2018 ___Published by European Centre for Research Training and Development UK (www.eajournals.org) INVESTIGATION OF ANAEROBIC PROCESSES IN SEPTIC TANK AS A WASTEWATER TREATMENT OPTION Odenigbo C. Department of Civil Engineering, Enugu State University of Science and Technology ABSTRACT: This study aims to find out the anaerobic processes in septic tank as a wastewater treatment plant. Samples were collected from both a septic tank and soakaway pit. Thus, after the collection of samples from the location, waste water analysis was conducted on the two water samples A and B respectively. The results obtained on the water samples showed that sample A under physical analysis using thermometer, pH meter, conductivity meter etc, has a higher physical characteristics value according to table 4.1, than that of sample B. more also from the chemical analysis seen in table 4.1 sample A has a higher BOD, COD and DO values more than that of sample B. Therefore this suggests that biological treatment processes was efficient in that septic tank and as such waste water discharged to the environment, will be harmless to the inhabitants in that environment. KEYWORDS: Anaerobic, Septic Tank, Sewage, Treatment. INTRODUCTION Human waste or more technically referred to as Excrets, which is made up of a solid matter, faeces and liquid matter, urine and is essentially an organic compound. The constituents making up the compound are carbon, nitrogen, phosphorus, sulphur and hydrogen. Also present are fats, carbohydrates, enzymes, proteins, trace elements, pathogens and many different bacteria. -
Guidelines for the Reuse of Gray Water
GUIDELINES FOR THE REUSE OF GRAY WATER Prepared by Hawaii State Department of Health Wastewater Branch June 22, 2009 STATE OF HAWAII, DEPARTMENT OF HEALTH GUIDELINES FOR THE REUSE OF GRAY WATER TABLE OF CONTENTS Chapters Page I Introduction .................................................................................. 1 II What is Gray Water? .................................................................... 2 III Gray water Health and Safety Concerns ...................................... 3 IV Characterizing Gray Water........................................................... 5 V Acceptable Uses for Gray Water.................................................. 8 VI Effects of Gray Water on Plants................................................... 9 VII Gray Water System General Requirements ................................. 15 VIII Gray Water System Design Consideration................................... 17 IX Gray Water System Maintenance................................................. 22 Appendix A. Gray Water System Design B. Washing Machine Water Reuse C. Example Calculations D. Percolation Rates E. Evapotranspiration Maps F. Gray Water Committee Members G. Waiver Letters from the Counties Guidelines for the Reuse of Gray Water June 22, 2009 Foreword The Department of Health has supported water reuse provided public health is not compromised. The Hawaii Legislature has urged the Department of Health to develop gray water recycling guidelines in House Resolution 290 of the twenty-fourth Legislature in 2008 and House Concurrent -
Properly Managing Your Septic Tank System
Properly Managing Your Septic Tank System EB1671 A conventional septic tank system has three Well Drainfield working parts: 1. The septic tank. Treatment Septic 2. The drainfield with its replacement area. Tank 3. The surrounding soil. Soil Septic Tank Drainfield Soil Groundwater Households that are not served by public sewers Replacement Area usually depend on septic tank systems to treat and dispose of wastewater. A well-designed, installed, and maintained septic system can provide years of reliable low-cost service. When these systems fail to operate effectively, property damage, groundwater and surface water pollu- tion, and disease outbreaks can occur. Therefore, it makes good sense to understand and care for The typical septic tank is a large buried rectangu- your septic tank system. lar, or cylindrical container made of concrete, fiberglass or polyethylene. Wastewater from There are many different types of septic tank your toilet, bath, kitchen, laundry, etc., flows into systems to fit a wide range of soil and site condi- the tank. Heavy solids settle to the bottom where tions. The following information will help you bacterial action partially decomposes them to understand a conventional gravity-now septic digested sludge and gases. Most of the lighter system and keep it operating safely at the lowest solids, such as fats and grease, rise to the top and possible cost. form a scum layer. COOPERATIVE EXTENSION Tank Covers Many products on the market, such as solvents, yeast, bacteria, and enzymes claim to improve septic tank performance, or reduce the need for Liquid Level routine pumping. None of them have been found Inlet Scum Layer Outlet To to work. -
Guidelines for Using Urine and Blackwater Diversion Systems in Single-Family Homes
FOR PROTECTION OF THE BALTIC SEA ENVIRONMENT Guidelines for Using Urine and Blackwater Diversion Systems in Single-Family Homes Author: Maria Lennartsson & Peter Ridderstolpe Editor: Gunnar Norén, Executive Secretary, Coalition Clean Baltic Language: Carl Etnier and Diana Chace This brochure discusses two different systems for ecological sanitation in single family homes: urine diversion and blackwater diversion. It presents practical information and technical guidelines for installing and operating the systems, as well as for using urine and blackwater in agriculture. Introduction The primary purpose of a wastewater system is to provide a good sanitary environment in and around the home. This can be done in many different ways. A common solution for single-family homes outside urban areas has been to infiltrate the wastewater into the ground, after treatment in a septic tank. This is safe as long as the wastewater is discharged below the surface, and soil conditions and groundwater levels are appropriate. In the last decade, it has become more common to view wastewater as a resource. In the first place, water itself is regarded as a limited resource. Also, there is increased recognition that the nutrients in wastewater can be recycled through agriculture if the material can be properly disinfected. This has led to the development of new wastewater technologies, including source-separating systems in which either urine or blackwater (urine + feces) is collected separately. In this way, between 70 and 90% of all the nutrients in wastewater can be collected and used in agriculture. We will use the term ecological sanitation to describe this method of closing nutrient loops. -
There Are Two Types of Systems Used in The
Impacts of Sanitary Sewer Overflows and Combined Sewer Overflows on Human Health and on the Environment: a Literature Review Prepared For: Sacramento Area Sewer District Prepared By: Office of Water Programs California State University Sacramento August 2008 Introduction There are two types of public sewer systems used in the United States for collecting and conveying sanitary sewage, combined sewer systems (CSS) and sanitary sewer systems (SSS). Combined sewer systems collect and convey sanitary sewage and urban runoff in a common piping system. Sanitary sewer systems collect and convey sanitary sewage separately from urban runoff. In locations where SSSs exist, urban runoff is collected and conveyed in a separate storm sewer system (EPA, 2004). There are approximately 20,000 SSSs in the U.S. serving 147 million people and approximately 1,100 CSSs serving 43 million people (Meyland et al., 1998). CSSs were built prior to 1900 and were originally designed to convey combined sewage directly to points of discharge, generally into adjacent water bodies. With the advent of sewage treatment, CSS discharge points were redirected to wastewater treatment plant intake points (EPA, 2004). Out of economic necessity, wastewater treatment plants have limited hydraulic and treatment capacity. These plants are generally designed to accommodate diurnal peak sanitary sewage flows and loads, plus a limited additional hydraulic load resulting from wet weather sources. During wet weather events, hydraulic loads in CSSs quickly exceed the treatment and hydraulic capacity of treatment plants, necessitating diversion of part of the flow from the plant. Provisions for flow diversions around the treatment plant are designed into combined sewer systems. -
Doctor of Philosophy
KWAME NKRUMAH UNIVERSITY OF SCIENCE AND TECHNOLOGY KUMASI, GHANA Optimizing Vermitechnology for the Treatment of Blackwater: A Case of the Biofil Toilet Technology By OWUSU, Peter Antwi (BSc. Civil Eng., MSc. Water supply and Environmental Sanitation) A Thesis Submitted to the Department of Civil Engineering, College of Engineering in Partial Fulfilment of the Requirements for the Degree of Doctor of Philosophy October, 2017 DECLARATION I hereby declare that this submission is my own work towards the PhD and that, to the best of my knowledge, it contains no material previously published by another person nor material which has been accepted for the award of any other degree of any university, except where due acknowledgement has been made in the text. OWUSU Peter Antwi ………………….. ……………. (PG 8372212) Signature Date Certified by: Dr. Richard Buamah …………………. .................... (Supervisor) Signature Date Dr. Helen M. K. Essandoh (Mrs) …………………. .................... (Supervisor) Signature Date Prof. Esi Awuah (Mrs) …………………. .................... (Supervisor) Signature Date Prof. Samuel Odai …………………. .................... (Head of Department) Signature Date i ABSTRACT Human excreta management in urban settings is becoming a serious public health burden. This thesis used a vermi-based treatment system; “Biofil Toilet Technology (BTT)” for the treatment of faecal matter. The BTT has an average household size of 0.65 cum; a granite porous filter composite for solid-liquid separation; coconut fibre as a bulking material and worms “Eudrilus eugeniae” -
Faecal Sludge)
SFD Manual – Volume 1 and 2 Version 2.0 I Last updated: April 2018 ©Copyright All SFD Promotion Initiative materials are freely available following the open-source concept for capacity development and non-profit use, so long as proper acknowledgement of the source is made when used. Users should always give credit in citations to the original author, source and copyright holder. The complete Manual for SFD Production and SFD Reports are available from: www.sfd.susana.org Contents Volume 1 1. Introduction ............................................................................................................................... 2 1.1. Purpose of this manual ..................................................................................................... 3 2. Key definitions of the SFD-PI ................................................................................................... 3 3. Levels of SFD Report ............................................................................................................... 5 3.1. ‘Level 1’ - Initial SFD ......................................................................................................... 6 3.2. ‘Level 2’ - Intermediate SFD ............................................................................................. 6 3.3. ‘Level 3’ - Comprehensive SFD ........................................................................................ 6 3.4. SFD Lite ........................................................................................................................... -
Lesson B1 RESOURCE MANAGEMENT SANITATION
EMW ATER E -LEARNING COURSE PROJECT FUNDED BY THE EUROPEAN UNION LESSON A1: C HARACTERISTIC , A NALYTIC AND SAMPLING OF WASTEWATER Lesson B1 RESOURCE MANAGEMENT SANITATION Authors: Holger Gulyas Deepak Raj Gajurel Ralf Otterpohl Institute of Wastewater Management Hamburg University of Technology Hamburg, Germany Revised by Dr. Yavuz Özoguz data-quest Suchi & Berg GmbH Keywords Anaerobic digestion, Bio-gas, Black water, Brown water, Composting/Vermicomposting, Composting/dehydrating toilet, Ecological sanitation, Grey water, Rottebehaelter, Sorting toilet, Vacuum toilet, Yellow water, EMW ATER E -LEARNING COURSE PROJECT FUNDED BY THE EUROPEAN UNION LESSON A1: C HARACTERISTIC , A NALYTIC AND SAMPLING OF WASTEWATER Table of content 1. Material flows in domestic wastewater....................................................................4 1.1 Different sources..................................................................................................4 1.2 Characteristics of different streams...................................................................4 1.3 Yellow water as fertilizer .....................................................................................6 1.4 Brown water as soil conditioner.........................................................................8 2. Conventional sanitation systems and their limitations..........................................9 3. Conventional decentralised sanitation systems – benefits and limitations.......12 4. Resource Management Sanitation .........................................................................14 -
Microbiology of Septic Systems Microbiology of Septic Systems
Microbiology of Septic Systems Microbiology of Septic Systems The purpose of this discussion is to provide a fundamental background on the relationship between microbes, wastewater, and septic systems. • What microbes are present in septic systems? • What role do they play in the treatment process? • What concerns are associated with them? Microbiology of Septic Systems The Microbes The microbes associated with septic systems are bacteria, fungi, algae, protozoa, rotifers, and nematodes. Bacteria are by a wide margin the most numerous microbes in septic systems. Microbiology of Septic Systems Bacteria constitute a large domain of prokaryotic (single cell, no nucleus) micro- organisms. They are present in most habitats on the planet and the live bodies of plants and animals. Escherichia coli Microbiology of Septic Systems Fungi are a large group of eukaryotic (having a nucleus and organelles) organisms that includes yeasts and molds as well as mushrooms. They are classified as a kingdom separate from plants, animals, and Saccharomyces cerevisiae bacteria. Microbiology of Septic Systems Protozoa are a diverse group of unicellular eukaryotic organisms, many of which exhibit animal-like behavior, e.g., movement. Examples include ciliates, amoebae, sporozoa, and flagellates. Assorted protozoa Microbiology of Septic Systems Rotifers are a phylum of microscopic and near- microscopic pseudo- coelomate animals, common in freshwater environments throughout the world. They eat particulate organic detritus, dead bacteria, algae, and protozoans. Typical rotifer. Microbiology of Septic Systems Nematodes , or roundworms, are one of the most diverse of all animal phyla. Over 28,000 species have been described, of which over 16,000 are parasitic. The total number of species has been estimated to be about 1,000,000. -
Graywater Safety
L-5480 9-08 Onsite wastewater treatment systems Graywater tank Blackwater tank Figure 1: A home with separate blackwater and graywater plumbing systems. Graywater safety Rebecca Melton and Bruce Lesikar Extension Assistant and Professor and Extension Agricultural Engineer The Texas A&M System hen homeowners use graywater to water their lawns, they help preserve washed materials soiled with human limited water supplies, reduce the demand for potable water for lawn waste (such as diapers) and water that Wirrigation and decr,ease the amount of wastewater entering sewers or has been in contact with toilet waste. onsite wastewater treatment systems. A graywater system may collect water from a single approved source However, homeowners who What is in graywater? or from any combination of those irrigate their lawns with graywater sources. The amount and quality The Texas Administrative Code need to understand the risks and of the graywater depends on the defines graywater as water from these safety issues associated with such use. sources. residential sources: Residential wastewater can be They should know the constituents ✔ of graywater as well as their potential Showers and bathtubs classified as either blackwater (sew- ✔ effects on human, soil, plant, and Sinks, except those used for age containing fecal matter or food environmental health. disposal of hazardous or toxic wastes) or graywater. If graywater is materials or for food preparation collected separately from blackwater, or disposal it can be dispersed as irrigation water ✔ Clothes-washing machines with less treatment than is required The code excludes water that has for blackwater. Table 1 includes a partial list of Table 1.