Method for treating produced wastewater of gar carrageenan and utilizing method in ecological mariculture

Abstract

The invention discloses a method for treating gar carrageenan produced wastewater and a utilizing method in ecological mariculture, aiming at the features of acid wastewater and alkali wastewater in the production processes of gar and carrageenan, the wastewater is recovered, concentrated, mixed and filtered, muriatic acid is added into the wastewater to adjust the pH value of the wastewater, andthen activated sludge treatment, flocculation treatment and chlorine dioxide treatment are carried out on the wastewater, and appropriate amount of wastewater after being treated is discharged into abreeding pond to mix with seawater for polyculture of gracilaria, fish and shrimp according to the requirements of the cultivation. By utilizing and absorbing ammonia nitrogen in the wastewater and organic matters generated from fish, shrimp and baits by the gracilaria, the method solves the problem of wastewater treatment, achieves the purposes of water quality purification and ecology cultivation, realizes the effects of environmental protection and comprehensive utilization, has very important realistic significance on environmental protection, on promotion of production industry of gar carrageenan and on the development of the marine aquaculture, and is applicable to popularization and application.

Description

technical field [0001] The invention belongs to the application of sewage treatment technology in the field of chemistry, in particular to a method for the treatment of waste water produced by agar gum carrageenan and its utilization in ecological mariculture. Background technique [0002] The production process of agar gum and carrageenan produces a large amount of waste water containing salt, ammonia nitrogen, alkali and other organic substances. Many manufacturers discharge these waste water directly or after simple treatment, which pollutes the environment and makes agar gum and carrageenan. The survival and development of carrageenan production enterprises have been restricted. At the same time, Gracilaria is the raw material for the production of agar gum, and it is also the bait for abalone breeding. In recent years, due to the excessive utilization of the resources of Gracilaria, the output of Gracilaria has dropped rapidly and the price has gradually increased, whic...

AI Technical Summary

Problems solved by technology

[0002] The production process of agar gum and carrageenan produces a large amount of waste water containing salt, ammonia nitrogen, alkali and other organic substances. Many manufacturers discharge these waste water directly or after simple treatment, which pollutes the environment and makes agar gum and carrageenan. The Survival and Development of Carrageenan Production Enterprises Are Restricted

At the same time, Gracilaria is the raw material for the production of agar gum, and it is also the bait for abalone breeding. In recent years, due to the excessive utilization of the resources of Gracilaria, the output of Gracilaria has dropped rapidly and the price has gradually increased, which has caused serious damage to the production enterprises of agar gum and the abalone breeding industry. big impact

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