Abstract The objective is to analyze Klong Prem Prachakorn water quality and its water management. A total of 10 parameters include pH water temperature turbidity dissolved oxygen (DO) biological oxygen demand (BOD) chemical oxygen demand (COD) suspended solid (SS) total dissolve solid (TDS) and coliform bacteria were measured. Water samples were taken from 3 sampling points along the length of the canal between Bang Khen train station intersection and Wat Samian Nari intersection with a total distance of 1.3 kilometers. Samplings were done weekly for 5 weeks started from 12th December 2013 to 15th January 2014. The results from weekly monitoring of Klong Prem Prachakorn’s water quality show that the values of each parameters being monitored are within the range of the surface water quality standards. Howeverthe reporting values may show weekly fluctuation which may be resulting from relating environmental factors such as changing temperature the canal’s water volume and level (may results from the operation of the floodgate by the Department of Drainage and Sewerage). Nevertheless the values show that the canal water is clean for surface water according to type 4 water quality and can be used inindustrial sector. This study on Klong Prem Prachakorn’s environmental condition has provided a piece of knowledge that was appliedfor environmental problems’ corrective concepts and guidelines. Furthermore knowledge and information gathered in this study together with the use of a Geographical Information System (GIS) can be applied for ecological conservation studies of the areas. This study contributes to an existing knowledge and understanding of Klong Prem Prachakorn’s water quality problems and can be used to support water quality improvement campaign

Chitosan natural cationic polysaccharides is synthesized by deacetylation of chitin one of the major structural elements of exoskeleton of crustacean shrimps. Due to its combination of many unique properties such as no toxicity biocompatibility and biodegradability chitosan has been widely used to adsorb fat and heavy metal absorbents. The present study was undertaken to demonstrate that chitosan extracted from shrimp shell wastes had ability in fat and oil adsorption. In the process 50% chitin in shrimp shells was first obtained and converted into for 25% chitosan through demineralization deproteination and deacetylation process. The highest adsorption performance at 72% was achieved at the chitosan sample at the condition composed of 0.6 g chitosan agitating in 400 mg/L of synthetic water comprising of fat and oil shaking at 90 rpm/min for 10 min. and thus equilibrating for 15 min. at room temperature. Its fat and oil removal efficiency was a effectively close the with that of commercial chitosan (86% and 85% oil and grease removal efficiency). The synthetic chitosan revealed 68.42% adsorption efficiency in treating in water sample with 570 mg/L of oil and fat from the effluent in the canteen at Rajamangala University of Technology Phra Nakhon North Campus. Therefore from overall the chitosan prepared from shrimp shells could possibly be further developed for future application in oil and fat removal from waste water treatment system.

Water Hyacinth Yarns and Their Transformed Materials Dyeing Machine for Developing Small and Medium-Sized Enterprises was a research project what an aim for producing a prototype dyeing machine. The machine was used at the small enterprise in Nakhon Prathom province. The dyeing machine was contributed by stainless steel. The outer dimension was 100 centimeters in height 130 centimeters in length and 90 centi-meters in width. The inner structure contains with perforate stainless steel drum. It had diameter as 80 centimeters with 90 centimeters length. The container capacity was 27 liters for the raw material as 10 kg of the dry Water Hyacinth Yarns or 5 kg of the dry Water Hyacinth roots. The machine was running test for reactive dyeing process at 80oC for 30 minutes. The machine was achieved for reduce time operation as 5 times and gas consumption as 2.38 times. The break-even point was 1.09 year and B/C as 2.22. Moreover it can solve the fuzzy yarns problem and the volatile smoke during the tradition dyeing. The knowledge was transferred to the stakeholders at the target area as “Chumchonjaksanpaktobchawha Bann klongnokkratum” enterprise in Nakhon Pra thom province. They were satisfied in this benefit in good to very good level.

The research objective is to utilize the waste water at 12ºC to 20ºC in exchange with the process water at the temperature of 29ºC. After entering the heat exchanger the process water will have the reduced temperature of 19ºC and then will be delivered to the cooler so the temperature of the process water will further be reduced to 15ºC to involve in the production process. Consequently the cooler’s energy use is lower. Since the common coolers used in these days have problems about the clogged system caused by shrimp residue the cleanup of the system is difficult and the maintenance cost is high. With this problem the research and development of the new heat exchanger is carried out resulting to the Shell and Tube Heat Exchanger type with the angled lid and the waste water flow control pads allowing the water alternatingly running through the lower part and upper part of each pad. The process water will flow in the 6 sets of the stainless tubes with 2 mm. thickness ½ inch diameter and 6 meter length. The space between the set is 5 centimeters for exchanging heat with the waste water flowing outside the tubes. The study conclusion is that the new heat exchanger can reduce the temperature of the process water to 19ºC so it can save the electricity cost of the cooler for 886485 baht per year and make the cleanup easier without taking off the equipment parts thus lowering the maintenance cost as well.

This research aims to develop the ceiling board mixed with coconut coir. The 5 ratios of gypsum plaster: coconut coir: sodium silicate: tap water are equal to 1 : 0 : 1: 0.03 1: 100: 1: 0.03 1: 150: 1: 0.03 1: 200: 1: 0.03 1: 250: 1: 0.03 และ 1: 300: 1: 0.03 by weight. The ceiling boards were produced by casting in normal temperature (30 – 35 degree of Celsius). The properties testing of ceiling board mixed with coconut coir followed the TIS 219-2009 standard (gypsum plasterboard) including: breaking load nail pull resistance deflection water absorption density and thermal conductivity coefficient. From the results 1 : 1 5 0 : 1: 0.03 is the most suitable ratio of ceiling board mixed with coconut coir. This developed ceiling boards can reduce the quantity of coconut coir waste and get the good thermal insulation ceiling board products