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Rural domestic mixed wastewater comprehensive purification treatment device and method

A domestic wastewater and comprehensive treatment technology, applied in biological water/sewage treatment, chemical instruments and methods, adsorption water/sewage treatment, etc., can solve secondary pollution, less suitable technology for kitchen waste and toilet wastewater treatment, and shorter repair period Long-term problems, to achieve the effect of reducing COD value, ensuring the health of rural water environment, and reducing the number of fecal coliforms

Pending Publication Date: 2020-05-29
AGRO ENVIRONMENTAL PROTECTION INST OF MIN OF AGRI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Physical and chemical purification technologies are complicated to deal with and are likely to cause secondary pollution, while biological purification technologies are more environmentally friendly and harmless, but the repair period is long
[0004] At present, there are many treatment technologies for urban domestic sewage at home and abroad; but there are few suitable technologies for the treatment of rural kitchen waste and toilet wastewater

Method used

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  • Rural domestic mixed wastewater comprehensive purification treatment device and method
  • Rural domestic mixed wastewater comprehensive purification treatment device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A comprehensive treatment device for domestic wastewater in rural areas, the structure of which is as follows figure 1 As shown, it includes a comprehensive screening device connected in sequence, a salt substance filter pipe, a composite purification device, a toxic substance elimination pipe, an ecological digestion device and a garden planting micro-nozzle.

[0052] The comprehensive screening device preferably has a bottle-shaped structure; the top end is a circular waste water feeding port; the diameter of the waste water feeding port is 30 cm. The comprehensive sieving working area is columnar, the bottom diameter is preferably 90cm; the height is preferably 120cm; it is made of PVC material, and the wall thickness is preferably 1cm.

[0053] The comprehensive filtering working area of ​​the comprehensive filtering device includes a primary filter screen for suspended matter, a secondary filter screen for suspended matter, a primary filter membrane for oily substa...

Embodiment 2

[0065] A method for comprehensive treatment of rural domestic wastewater

[0066] Put rural kitchen waste wastewater and toilet wastewater into the device in Example 1 for treatment, add 10L of wastewater each time, and pass through the comprehensive screening device, salt filter tube, composite purification device, toxic substance elimination tube, Ecological storage device. In order to ensure the purification effect, the residence time of wastewater in each device is at least 24h.

[0067] The experimental results show that for the treatment of COD, when the influent concentration is 300mg / L, after passing through the device of embodiment 1, the effluent concentration is 70mg / L, which can reach the farmland irrigation water quality standard (GB5084-2005, Vegetable field irrigation limit value 60~100mg / L). For the treatment of suspended solids, when the influent concentration is 220mg / L, after the purification of the device in Example 1, the effluent concentration is 40mg / L...

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Abstract

The invention provides a rural domestic wastewater comprehensive treatment device and method, and belongs to the technical field of domestic wastewater treatment. The device comprises a comprehensivescreening and filtering device, a salt substance filtering pipe, a composite purification device, a toxic substance eliminating pipe, an ecological absorption device and a courtyard planting micro-spraying pipe, which are connected in sequence. The comprehensive screening and filtering device sequentially comprises a suspended matter primary filtering screen, a suspended matter secondary filteringscreen, an oil matter primary filtering membrane and an oil matter secondary filtering membrane from top to bottom; a chemical reagent feeding port, a first physical and chemical parameter monitoringstation and a biological strain feeding port are formed in the top end of the composite purification device; a floating bed is arranged in the ecological absorption device, aquatic plants are plantedin the floating bed; and a third physical and chemical parameter monitoring station is arranged at the water inlet of the courtyard planting micro-spraying pipe. Sewage treated by the device can be directly returned to the field for utilization in a courtyard, so that water resources are saved, and the device has important significance for guaranteeing rural water environment health.

Description

technical field [0001] The invention belongs to the technical field of domestic wastewater treatment, and in particular relates to a device and method for comprehensive treatment of rural domestic wastewater. Background technique [0002] In recent years, my country's rural economy has developed rapidly and farmers' living standards have been continuously improved, but the problem of rural environmental pollution has become increasingly serious. The amount of domestic sewage discharged by rural residents is increasing year by year, and has become one of the important pollution sources affecting the water body of the river basin. However, rural wastewater discharge is scattered, and the discharge volume of each household is small, so it is impossible to copy urban sewage treatment facilities. [0003] At present, water purification technologies are mainly divided into three categories: physical, chemical, and biological. Among them, physical purification technology refers t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F9/00C02F1/001C02F1/44C02F1/50C02F3/34C02F3/32C02F1/28C02F1/40
Inventor 张春雪郑向群杨波
Owner AGRO ENVIRONMENTAL PROTECTION INST OF MIN OF AGRI