Module, reactor, system and method for treating water
The present disclosure provides a water treatment module, a bioreactor comprising one or more of such modules and a receptive water treatment system. Also provided herein is a method making use of the above module, bioreactor and system. The water treatment module comprises (i) at least one elongated gas enclosure comprising a gas inlet and two vertical walls, at least one vertical wall comprising a water-impermeable and gas-permeable membrane having a water-facing side and a gas-facing side, the two vertical walls separating between water external to the enclosure and gas within the enclosure, the gas enclosure being in a rolled or folded configuration to thereby define a convoluted horizontal path and one or more water-treatment spaces formed between opposite water facing sides of the enclosure; and (ii) a diffuser arrangement comprising gas diffusers configured for introducing a stream of gas into the one or more water treatment spaces.
1. A method for treating water, the method comprises:
introducing water into a bioreactor comprising at least one gas permeable, water impermeable membrane module, defining at least one gas enclosure and one or more water treatment spaces;
introducing a water-treatment gas into the at least one gas enclosure;
introducing gas into a gas diffuser arrangement positioned underneath the gas permeable, water impermeable membrane module, to thereby cause the discharge of a stream of gas into the one or more water treatment; and
collecting treated water;
wherein the gas is intermittently introduced through the diffuser arrangement into the one or more water treatment spaces and wherein any one of duration and frequency of the gas being introduced is determined by at least one parameter indicative of quality of water within the bioreactor,
wherein the introducing of gas and discharge of a stream of gas causes mixing of the water, and
wherein the at least one parameter is concentration of ammonium-containing compounds within the water, and
wherein any one of said frequency and duration are increased in response to an increase of said concentration of ammonium-containing compounds.
2. The method of claim 1 , wherein the any of duration and frequency of the gas being introduced is manipulated by a controller according to any of the at least one parameter indicative of quality of water.