Sanitation Study and wastewater collection system conceptual design

ﺑﺴﻢ ﺍﻟﻠﻪ ﺍﻟﺮﺣﻤﻦ ﺍﻟﺮﺣﻴﻢ Sanitation Study and wastewater collection system conceptual design for Beita Town by Hamadalla Alsayyed Shehada Dweikat under the direction of Dr. Sameer Shadeed 2011 -2012

INTRODUCTION

Introduction � Sanitation situation reflects the development of communities. � Health of people is also related to the sanitation situation. � Existing of sewerage system consider an indication of a good sanitation situation. � Beita is not served by a sewerage system.

Project Objectives � Identify the existing sanitation situation. � Identify the water supply system and sanitation problems. � Conceptual system. design of wastewater collection

Project Location

Methodology Data Collection Questionnaire Municipality Citizens Analyze Data Auto. Cad Civil 3 D Sewer. Cad

STUDY AREA

Topography

Population � Year Growth rate % Population 2010 - 1000 2010 -2020 3 13439 2020 -2030 2. 8 17713 2030 -2040 2. 6 18185

Mean Monthly Temperature 30 25 20 15 10 5 0 Feb. Mar. Apr. May. Jun. Jul. Aug. Sep. Oct. Nov. Dec.

Monthly Rainfall 160 140 120 100 80 60 40 20 0 Jan. Feb. Mar. Apr. May. Jun. Jul. Aug. Sep. Oct. Nov. Dec.

Water Source � The main source is from Mekorot company. � Several springs

QUESTIONNAIRE

Questionnaire � Questionnaire was developed to collect information needed. � It • • • was include: Household information water consumption waste water Solid waste General health and hygiene

Sampling

Data Analysis � Sample size is 70. � Average number of family members is 7. � Average size of cesspit is 32. 5 m³. � Average volume of solid waste is 5 kg/day. � 60% have a cistern, while 40% does not.

WATER DISTRIBUTION SYSTEM

Water Distribution System Ø Beita is served by WDN since 1996. Ø The state of WDN is good. Ø The Avg. lost is 32%. � The adequacy of water 15% 11% excellent medium 74% weak

Water Consumption

Average Monthly Rate

GENERAL HYGIENE SITUATION

General Hygiene and Sanitation � The hygiene situation is good.

Solid Waste � The � amount of disposal solid is 20 ton/day. 700 gm solid waste per capita. � The number of containers in general is enough.

Landfill � Landfill pits. � Status � The ground is rocky and contains large of landfill is very bad. waste is burn in unhealthy way.

Disposal of Wastewater � 95% discharge using cesspits. is percolating and 5% is septage. � Trucks are used to emptying from cesspits.

Sewerage Collection System

Look !!!

System characteristics � Separate � Side system from storm water is used. of the network.

Wastewater Production � The design per capita water consumption to 120 l/c. d. � Quantity of waste water is 75 % of the consumed water.

Population Density

The Area Description Current Density (Capita/dunum) predicted Density (Capita/dunum) 1 Beita alfouqa 21 25 2 Beita altahta 30 35 3 Beer quza 6 15 4 Almahfrah 6 15

Design Criteria � Velocity range 0. 6 – 6 m/s. � Minimum diameter 200 mm. � slope range 1% -12 %. � Cover range 0. 8 – 5 m.

Design of Sewerage System

Design Program

Supplementary Program

Design Steps

Network Layout

Sample Calculation � Total number of manholes is 1146. � Total length of pipes is 33. 739 km. � The diameter of pipes vary between 200 mm and 300 mm � Total � 93% number of outfalls is 3. of the town is served.

Profile

Outfalls

Number of outfall Inflow (m 3/d) 1 720 2 2100 3 3180

CONCLUSION & RECOMMENDATION

Conclusion � � Sewerage collection systems is conventional gravity type. Sewer outfalls and trunk mains design sized for the future development. � The pipes material used is u. PVC. � Maximum distance between manholes ≤ 50 m.

Recommendation � Surveying map. points for roads instead of contour � Areas not served may use individual house connection. � Use pumps to transfer the wastewater to WWTP.

Thank you