STATUS AND WASTE TREATMENT TECHNOLOGY IN KHAC NIEM RICE NOODLE VILLAGE, BAC NINH PROVINCE

Abstract

Khac Niem rice noodle village in Bac Ninh province operates spontaneously with small-scale, backward, manual production equipment, narrow production ground, therefore environmental pollution in this village has reached an alarming level, seriously affecting on the environment and community health. Waste water for producing noodle has the pollution concentration exceeding the permitted standard many times, especially BOD, COD, SS, Nitrogen, phosphorus and pathogenic microorganisms....  Methods are used such as: survey method, statistics, analysis and synthesis, expert method, method of laboratory analysis. pH is in the range of 5.1-7; DO is from 1.3 to 3.2 mg/l; BOD₅ exceed the permitted standards 1.57-4.31 times and SS 4.6 times and coliforms 4.2-4.4 times. Distributed waste water treatment system is a new solution for organic wastewater treatment with scale of less than 1000m³/day and night, with the advantage of high treatment efficiency, adapting to fluctuations in flow, no power consumption is required if the treatment area is at an appropriate slope, environmentally friendly treatment technology, waste water is treated by microorganisms in the waste water or through natural processes without chemicals and especially require simple operation and maintenance and at a very low cost.